Re: [PATCH v2] drm/exynos: Use pm_runtime_resume_and_get() to replace open coding

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在 2021/5/24 20:05, Inki Dae 写道:

21. 5. 22. 오전 12:31에 Daniel Vetter 이(가) 쓴 글:
On Fri, May 21, 2021 at 05:06:06PM +0800, Tian Tao wrote:
use pm_runtime_resume_and_get() to replace pm_runtime_get_sync and
pm_runtime_put_noidle.
It would be good to explain why: Apparently get_sync increments the
refcount even if it fails, which ususally leads to leaks.
Tian Tao, could you update the description?
done:-)

Thanks,
Inki Dae

With that or similar added to the commit message:

Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
---

v2: drop unnecessary change about if condition.
---
  drivers/gpu/drm/exynos/exynos_drm_mic.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index 3821ea7..32672bf 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -268,11 +268,9 @@ static void mic_pre_enable(struct drm_bridge *bridge)
  	if (mic->enabled)
  		goto unlock;
- ret = pm_runtime_get_sync(mic->dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(mic->dev);
+	ret = pm_runtime_resume_and_get(mic->dev);
+	if (ret < 0)
  		goto unlock;
-	}
mic_set_path(mic, 1); --
2.7.4

.





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